55571688890222 has 32 divisors (see below), whose sum is σ = 83848595317344. Its totient is φ = 27622747468800.

The previous prime is 55571688890177. The next prime is 55571688890281. The reversal of 55571688890222 is 22209888617555.

It is a happy number.

It is a super-2 number, since 2×55571688890222² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336346472 + ... + 336511652.

It is an arithmetic number, because the mean of its divisors is an integer number (2620268603667).

Almost surely, 2^{55571688890222} is an apocalyptic number.

55571688890222 is a deficient number, since it is larger than the sum of its proper divisors (28276906427122).

55571688890222 is a wasteful number, since it uses less digits than its factorization.

55571688890222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166964.

The product of its (nonzero) digits is 193536000, while the sum is 68.

The spelling of 55571688890222 in words is "fifty-five trillion, five hundred seventy-one billion, six hundred eighty-eight million, eight hundred ninety thousand, two hundred twenty-two".